ensure we don't deselect the selected tabBarItem when presenting alerts on iPad

[natharateh]

https://phabricator.wikimedia.org/T187515

Before

After

[natharateh]

Instead of asking for the view of the selected tab bar item and setting passthroughViews to include that view, I can set passthroughViews to include the entire tab bar. However, if I do that, after dismissing the alert (via tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController in WMFAppViewController) the view that was presenting the alert will not know that the alert was dismissed and as a result, will not update the tintColor of its buttons.

[montehurd]

I added quick note to the ticket: https://phabricator.wikimedia.org/T187515#4024679

[montehurd]

Looks like setting

tabBar.tabBar.tintAdjustmentMode = UIViewTintAdjustmentModeNormal;

on the line before

self.rootTabBarController = tabBar;

in loadMainUI fixes it